Question

Prepare a 10min presentation slide of the implementation of maximum power point tracking (mppt) in a pv array using MATLAB/Simulink software. Also include the practical uses of mppt around the world.

Implement MPPT using the perturb and observe technique

Answer 1

I am attaching jpeg format of your PPT which I prepared. please review the PPT which contain your answer and may be helpful for your MATLAB-

Solar PVs Modules and Arrays Cell Module Arrays JCell considered as a single unit of PV Module Module considered as a single panel consisting of several cell connecting in series to induce / increase voltage. Array is considered as a no. of Parallel connectedmodules in order to increase system current.

Solar PVs :Continued Electrical equivalence of Solar PV cell Rs ID Rsh Load Dode Without sun light, cell act as normal diode. During day hours, cell will functions and produces photo generated current just opposite of diode current (I). Net lphD PVIph

Solar PVs : Continued Characteristics of PV cell T00 I-V Characteristics

Solar PVs : Continued 250 0.1 0.2 аз 04 Q6 0.7 08 P-V Characteristics

Solar PVs : Continued v' Important Parameters Drawn from I-V Characteristics and P-V Characteristics Voc MPP MPPT Vs vs Is W's vs ls _ 0.5 0.2 Output Voltage Vs (in Volt) 0.6 0.3 0.4 0.5 0.7

Solar PVs : Continued Maximum Power Point Cells terminal connected to a variable resistor Max.power could be judged by varying resistor which can be obtained @ a particular operating point called MPP. Corresponding voltage and current @ MPP cale as m and lm respectively. Operating point determined by l-V curve and load line which is a straight line having slope I/R. For max. power R Rop Solar cell I-V curve of solar cell V.

Solar PVs : Continued Example of drawing max. power from solar panel PV Station 13, Bright Sun, Dec. 6,2002 Pmax is approx. 130w sc- (occurs at 29V, 4.5A) For max power from panels, attach 29V Kload4.5A But as the sun conditions change, the "max power resistance" must also change 0 5 10 15 20 25 303540 45 Vipanel)-voltsV oc I-V characteristic of 6.44 Ω resistor

Solar PVs : Continued Modeling Stages of PV Cell Modeling of Solar Cell (B). Modeling Mathematical equation of lpv (C). Modeling Mathematical equation of lm (A).Modeling Mathematical equation of lo (D). Modeling Mathematical equation (E). Modeling of final Circuitry of flow of Current. of Cell Temp

Solar PVs: Continued Parameters 7.61 26.3 200.143 8.21A 32.9A 9.825 e-8 8.214A 1.3 415.405 ohm 0.221 ohm 54 Imp Vmp Pmax lsc Voc lo lbv Rp Rs Ns Nb

Solar PVs: Continued Parameters 7.61 26.3 200.143 8.21A 32.9A 9.825 e-8 8.214A 1.3 415.405 ohm 0.221 ohm 54 Imp Vmp Pmax lsc Voc lo lbv Rp Rs Ns Nb

Solar PVs : Continued (A).Modeling Mathematical equation of lo sc.n oc.n exp (B). Modeling Mathematical equation of lpv (C). Modeling Mathematical equation of lm V+RI Various Equations for PV Cell Modelin

v' Solar PVs : Continued Discrele powergui Tipv) Vsope 25+273.15 From Temperature P-V scope 1000 Test ramp From Imadiation wim2 PV model Complete PV Array Model

Solar PVs: Continued I-V Characteristics P-V Characteristics

Buck/ Boost Converters:Continued Models & Results of Buck Converters Connected to PV Array Dol Ideal Saitch -273 18 O1 2 Tempersture 1000 PAM Model of PV Array Connected to Buck Converter

Buck/ Boost Converters: Continued Current Voltage

Buck/ Boost Converters:Continued PV Power

MPP Techniques : Continued Common MPPT Techniques Cheap & Easy Implementation Fractional Open-Circuit Voltage Fractional Short-Circuit Voltage Increased Efficiency Cheaper & EasiePertrb & Observe Incremental Conductance Expensive & Difficult Implementation Fuzzy Logic Control ANN

MPPT Techniques : Continued Perturb & Observe Measue V(k)IC) Calculate Power P(P(k-1)? No Yes No No Yes Vrefl) -Vref(k-1) C Vrefk) Vref(k-1)-C Vrefk) Vienk)- Return Flow Chart

MPPT is being used around the world in many applications based on solar energy. it is the technique to obtain maximum power from the sun. Some of the applications are

1. Agriculture works in Pumping and irrigation systems so that farmer can get maximum profit by saving electrical energy from plants and using solar using MPPT techniques.

2. Automobiles or Solar based vehicles.

3. Railways rooftop for conservation and saving for energy.

so there is various such application in which MPPT is must for tracking and fetching max energy from the sun.

Thanks